Bond Yield Calculator

Current yield, yield to maturity (YTM), yield to call, Macaulay and modified duration, and a full cash-flow schedule discounted at the computed yield.

YTM is the internal rate of return that equates the PV of all coupons plus face value at maturity to the bond market price. Uses bisection (up to 30 iterations) for precision, plus an approximate formula for quick reference.

Macaulay = weighted average time until cash flows are received. Modified = Macaulay / (1 + YTM/freq) and approximates the % price change for a 1% rate move — a key interest-rate risk measure.

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The Bond Yield Calculator uses industry-standard formulas and algorithms to ensure accurate results. However, for critical financial or medical decisions, always consult a qualified professional.

Simply enter your input in the provided field, adjust any settings to your preference, and the tool will process it instantly. You can then copy the result to your clipboard or download it.

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Current yield is simply the annual coupon divided by the price you pay today, so it measures only the income a bond throws off right now. Yield to maturity (YTM) is broader: it is the total annualized return you earn if you hold the bond to maturity, counting every coupon plus the gain or loss between your purchase price and the face value repaid at the end. That is why the two numbers differ for any bond not bought at par. A discount bond returns extra value when it matures at face, so its YTM sits above its current yield; a premium bond loses that premium at maturity, so YTM falls below current yield. The Bond Yield Calculator shows both side by side, making the gap and its cause easy to see.

A bond pays fixed coupons set at issuance, so the dollar income never changes once you own it. Yield, however, compares that fixed income to what you actually pay. If the market price falls, you are buying the same stream of coupons and the same face-value repayment for fewer dollars, so each dollar invested earns more — the yield rises. If the price climbs, you pay more for the identical cash flows and your yield drops. This inverse relationship is why bond prices fall when prevailing interest rates rise: existing bonds must yield as much as newly issued ones, and the only way an old bond can match a higher market yield is for its price to drop. Enter a price and coupon into the calculator and watch the computed yield move opposite to price in real time.

Compare the market price you pay against the bond's face value, usually $1,000. If the price is above face value, the bond trades at a premium; if it is below, it trades at a discount; and if the two are equal, it trades at par. Premiums and discounts arise because the coupon rate is fixed while market rates move: a bond paying more than current rates becomes more desirable and sells at a premium, while one paying less sells at a discount to stay competitive. The classification also predicts the yield relationship — premium bonds have a YTM below their coupon, discount bonds above. The Bond Yield Calculator labels each bond as premium, par, or discount automatically as soon as you enter the price and face value, so you never have to eyeball it.

Yield to worst is the lowest yield a bondholder can realistically receive, and it matters because many corporate and municipal bonds are callable — the issuer can redeem them early at a set call price. When that happens, you stop receiving coupons sooner than maturity, which can cut your return below the quoted yield to maturity. To stay conservative, professionals calculate both the yield to maturity and the yield to call, then quote the lower of the two as the yield to worst. For a premium callable bond the issuer is most likely to call when rates fall, so yield to call is usually the binding figure. Turn on the callable-bond option in the calculator, enter the call price and years to call, and it computes yield to call alongside YTM and reports the yield to worst for you.

Modified duration converts a bond's sensitivity to interest rates into a single, usable percentage. It equals the Macaulay duration divided by one plus the periodic yield, and it tells you the approximate percentage change in the bond's price for a one-percentage-point change in market yields. A bond with a modified duration of 7, for instance, would lose roughly 7% of its value if rates rose 1% and gain about the same if rates fell 1%. Longer maturities and lower coupons raise duration, which is why long-dated, low-coupon bonds swing the most when rates shift. The estimate is linear, so it is most accurate for small rate moves and slightly overstates losses on large ones. The Bond Yield Calculator reports both Macaulay and modified duration so you can gauge interest-rate risk before you buy.